Trolley-wire extension-splice



M. W. HERMES.

TROLLEY WIRE EXTENSION SPLICE.

APPLICATION FILED MAR. 18, 1921.

1,393,530. Patented Oct. 11, 1921.

ATTORNIY UNITED STATES PATENT OFFICE.

MIKE W. HERMES, OF BULGER, PENNSYLVANIA.

TROLLEY-WIRE EXTENSION-SPLICE.

To all whom it may concern:

Be it known that I, MIKE W. HERMES, a citizen of the United States, residing at Bulger, in the county of Washington and State of Pennsylvania, have invented new and useful Improvements in Trolley-Wire Extension-Splices, of which the following is a specification. v

This invention relates to trolley wire splices, and more particularly towhat I term a trolley wire extension splice.

One of the main objects of the invention is to provide a trolley wire splice which may be adjusted to accommodate expansion and contraction of the wire. A further object is to provide a splice of the character, stated of simple construction and operation which may be readily applied and may be manufactured at small cost. Further objects will appear from the detailed description.

In the drawings:

Figure 1 is a side view of a splice constructed in accordance with my invention. Fig. 2 is a top plan view of the splice.

Fig. 3 is a section taken substantially on line 3-3 of Fig. 2.

Fig. 4 is an enlarged fragmentary section through one of the securing blocks and associated parts.

In constructing the splice I. provide an elongated sheet metal casing 1 of substantially U shape in cross-section. A securing block 2 is slidably mounted in this casing adjacent to each end thereof, these blocks being formed of brass or any other suitable or preferred material. Block 2 is provided with a vertical bore communicating at its lower end with a groove in the underface of the block, the groove being adapted to receive a trolley wire 3 the end portion of which is turned upwardly at right angles to provide a vertically disposed arm 4: which projects through the bore in block 2, this arm being secured by a set screw 5 threaded into the block.

Each block is provided with a threaded rod 6 extending from its inner face, these rods being threaded into sleeves 7 of a turn buckle 8 provided at its central portion with a squared shoulder 9 adapted to fit snugly between the arms of easing 1 so as to lock the turn buckle against rotation. As will be understood, one of the rods 6 is provided with a left-hand thread, the other rod having a right-hand thread. To permit adjustment of blocks 2 toward and away from Specification'of Letters Patent. Patented Oct, 11, 1921, Application filed March 18, 1 9 21. Seria1.No. 453,507. I

each other, casing 1 is provided adjacent to each end of each side wall with a l0ngitudlnally extending slot 10 through which projects a securing screw 11 which passes the turn buckle so as to take up any slack in the trolley wire, or relieve excessive tenslon, as conditions may require.

If desired, though not necessarily, each block 2 is provided with a laterally projecting lug 18 which is bored to receive the end portion of a wire 14, this wire being secured by means of set screws 15 threaded into the lugs. This insures. electrical connection between blocks 2 though, under ordinary conditions, the casing 1, being held tightly against the blocks by screws 11 and nuts 12, will act as a conductor to establish electrical connection between the blocks.

The device constructed in the manner illustrated and described may be readily applied to a trolley wire of standard type and provides simple and efiicient means whereby contraction or expansion of the wire may be accommodated. It may be found desirable in practice to resort to changes in detailsof construction and arrangement of parts of the invention, and I intend to include all such variations, as fall within the scope of the appended claims, in this application in which a preferred form only of in invention is disclosed.

hat I claim is 1. In a device of the character described, a casing, blocks mounted in said casing and adjustable toward and away from each other, means for simultaneously adjusting said blocks, and means for securing the blocks in adjustment and for forcing them into tight contact with the casing.

2. In a device of the character described, a casing, blocks mounted in said casing adjacent the ends thereof, means for securing the ends of adjacent sections of a trolley wire to said blocks, and means cooperating with said casing for simultaneously adjusting the blocks toward and away from each other and for securing said blocks in adj ustment. I

3. In a device of the character described, a casing, blocks mounted in said casing adjacent the ends thereof, means for securing the blocks to the adjacent ends of sections of a trolley Wire, rods projecting from the inner faces of the blocks, and 'a turn buckle threaded on said rods and provided with means for cooperating With-theeasing'for normally'holding the turn buckle against rotation. 3

4. In a device of the character described, a casing, blocks slidably mounted in said casing and held against rotation therein, 10 rods projectlng from the inner faces of 'said 7 blocks,-. and a turnbuckle threaded upon said rods and provided-With an element fitting snugly-between the Walls ofthegcasing so as to normally hold said turn buckle 15 against-turning movement.

In testimony wher'eof Iv affix m 'natnre. 1 MIKE W. R ES. 3 

